CN1883956A - Image forming device and method - Google Patents
Image forming device and method Download PDFInfo
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- CN1883956A CN1883956A CNA200610092592XA CN200610092592A CN1883956A CN 1883956 A CN1883956 A CN 1883956A CN A200610092592X A CNA200610092592X A CN A200610092592XA CN 200610092592 A CN200610092592 A CN 200610092592A CN 1883956 A CN1883956 A CN 1883956A
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Abstract
The invention relates to image forming devices and methods. If humidity sensor detects that humidity of paper is at the defined value or above the defined value, then it is the time to judge whether the drop output of print data on the paper reaches the defined quantity or above the defined quantity; if it doesn't reach the defined value or above the defined value, to turn on heater at the setting time, the paper in the supply paper box can be heated to be dry, and then be supplied; if the drop output has reached the defined quantity or above it, even the humidity is at defined value or above it, we should not turn on the heater to heat up paper, but to supply paper under this condition. Doing it in this way can avoid curling by recording media, scrubbing record-header by recording media, inferiority of image quality, and can improve the transportation by recording media.
Description
Technical field
The present invention relates to image processing system and image forming method, relate in particular to printing medium and discharge the drop of record liquid to form the image processing system and the image forming method of image.
Background technology
Generally, at duplicator, printer, facsimile machine in the image processing systems such as compounding machine, adopts the electrofax mode at image forming part, this is that people are known, for example, carry the image forming part of ink-jet recording, use the liquid discharging head of the drop of discharging record liquid, constitute record head, transport printing medium on one side, make the drop that write down liquid attached to paper on one side, image formed.Printing medium described here can be enumerated for example paper, but is not limited thereto, for simplicity, below also note by abridging sometimes and be " paper ", also can be called " recording medium ", " transfer printing material " etc., " drop of record liquid " described here, below also note by abridging sometimes and be " ink droplet ", " formation image " described here, with " record ", " printing ", " printing ", " lettering " synonym.
In this ink-jet recording apparatus, in order to realize high picture quality, need to improve the hit location precision of ink droplet to paper, for example the spy opens 2000-25249 communique (following brief note is " patent documentation 1 "), it is disclosed like that the spy opens 2004-099280 communique (following brief note is " patent documentation 2 "), make the moving belt positively charged equably be used to transport paper, by electrostatic force absorption paper, the distance of record head and paper keeps certain, paper is supplied with in correct control, prevents the skew of paper position, prevents that paper from floating, prevent to collide and cause and stop up or dirty dirty that this is that people are known because of paper and record head.
The above-mentioned relatively mode that makes moving belt homogeneous positively charged, open in the disclosed device of flat 2004-131242 communique (following brief note is " patent documentation 3 ") the spy, moving belt applied just reach negative alternating voltage, on moving belt, form and just reaching negative electric charge figure, produce Electrostatic Absorption power.
Open in the disclosed device of flat 6-219582 communique (following brief note is " patent documentation 4 ") the spy, use the moving belt that generates electrostatic force.
On the other hand, in the image processing system of electrofax mode, if the printing medium moisture absorption, then not only fold can take place, knuckle etc., transporting property is low, and has problems such as photographic fixing or transfer printing be insufficient.Therefore, open in the disclosed device of 2000-255807 communique (following brief note is " patent documentation 5 ") the spy, be provided with the Humidity Detection means that are used for test paper incorporating section ambient humidity, light and temperature, and the dehumidifying means that are used to remove paper moisture, according to the testing result of paper incorporating section ambient humidity, light and temperature and the testing result that is accommodated in the paper amount of paper incorporating section, control dehumidifying means dehumidify to paper.
Open flat 11-255361 communique (following brief note is " patent documentation 6 ") the spy, the spy opens in the disclosed image processing system of 2002-148996 communique (following brief note is " patent documentation 7 "), dehumidifies by heating paper.
Open in the disclosed image processing system of 2002-292852 communique (following brief note is " patent documentation 8 ") the spy, control according to black discharge rate, it is provided with the lettering means of discharging ink droplet, separate the intermediate transfer body that moves in the gap relative to these lettering means, powder is coated on coating means on the intermediate transfer body, and will be formed on China ink on the intermediate transfer body as the transfer printing means of transfer printing on recording medium.Described powder is made of coagulating agent, be used for feasible ink droplet high viscosityization of discharging from the lettering means, form the China ink picture by the ink droplet of discharging at the intermediate transfer body from these lettering means, according to the black discharge rate of discharging from this lettering means is the lettering rate, and control is coated on powder coating weight on the intermediate transfer body by powder coating means.
The drop of discharging record liquid to printing medium forms in the image processing system of image, because drop is attached on the printing medium, it is wrinkling or crooked that printing medium for example produces ripple etc., and printing medium and record head friction cause deterioration in image quality.Usually, printing medium drying (humidity is low) can make that the amount of bow behind the lettering is low, and printing medium drying (humidity is low) person is also good from the separation property that moving belt separates.
Therefore, as above-mentioned image processing system in the past, detect the humidity of printing medium, when the high occasion of printing medium humidity, by heater means or dehumidifying means heating printing medium, making it become drying regime is the low state of humidity, can suppress the bending of printing medium etc.
But, heat by heater means, printing medium humidity step-down promptly is in drying regime, be attached to this dry printing medium occasion when making the volume drop discharge, the humidity of printing medium takes place sharply to change, so, printing medium produces wrinkling, generation and record head friction etc. cause that picture quality is low, or stop up.
Summary of the invention
The present invention puts forward for solving the existing problem of above-mentioned prior art, the objective of the invention is to, and provides to prevent that picture quality from lowly can improve the image processing system and the image forming method of transporting property of printing medium again.
To achieve these goals, the present invention proposes following scheme:
(1) a kind of image processing system is discharged drop from record head, forms image on printing medium, it is characterized in that, comprising:
Take in means, take in described printing medium;
Heater means, heating is accommodated in this and takes in described printing medium in the means;
Control device, according to the testing result that is accommodated in this humidity of taking in the described printing medium in the means and with the relevant information of drop discharge rate that is used on this printing medium forming image, control described control device.
(2) in (1) described image processing system, it is characterized in that, when the drop discharge rate that is used for formation image on this printing medium is quantitative above institute, no matter the testing result of described Humidity Detection means is not carried out the heating of described heater means to described printing medium.
(3) in (1) or (2) described image processing system, it is characterized in that, moving belt is applied electric charge, produce electrostatic force, the absorption printing medium transports.
(4) in (3) described image processing system, it is characterized in that, when the discontented institute of the detected humidity of described Humidity Detection means definite value, according to above-mentioned detection humidity, control applies electric charge to described moving belt, when the detected humidity of described Humidity Detection means reaches institute's definite value or institute's definite value when above, described printing medium is heated by above-mentioned heater means.
(5) in (1)-(4), in any described image processing system, it is characterized in that described heater means is configured in the top that is accommodated in the described printing medium in the means of taking in.
(6) in (1)-(5), in any described image processing system, it is characterized in that, be provided with the switch means that externally to operate, be used for the power supply of switch to described heater means.
(7) in (1)-(6), in any described image processing system, it is characterized in that, be provided with the manuscript reading section that is used to read original copy.
(8) a kind of image forming method is discharged drop from record head, forms image on printing medium, it is characterized in that, may further comprise the steps:
Take in described printing medium;
Detect the humidity of the printing medium of being taken in;
Calculate the drop discharge rate according to printed data;
According to the testing result of described printing medium humidity and the relevant information that is used on this printing medium, forming the drop discharge rate of image, control heater means.
(9) in (8) described image forming method, it is characterized in that, when the drop discharge rate that is used for formation image on this printing medium is quantitative above institute, no matter described Humidity Detection result does not carry out the heating of described heater means to described printing medium.
(10) in (8) or (9) described image forming method, it is characterized in that, moving belt is applied electric charge, produce electrostatic force, the absorption printing medium transports.
(11) in (10) described image forming method, it is characterized in that, when the discontented institute of detected humidity definite value, according to above-mentioned detection humidity, control applies electric charge to described moving belt, when detected humidity reaches institute's definite value or institute's definite value when above, described printing medium is heated by above-mentioned heater means.
According to image processing system of the present invention and image forming method, according to the testing result of the humidity that is accommodated in the printing medium in the means of taking in and with the relevant information that is used on this printing medium, forming the drop discharge rate of image, the control heater means, when even printing medium humidity is high, the many occasions of drop discharge rate, do not heat described printing medium, like this, can prevent that printing medium from curling etc., prevent printing medium friction record head, can prevent deterioration in image quality, improve the transporting property of printing medium.
Description of drawings
Fig. 1 represents the summary pie graph of the image processing system that the embodiment of the invention relates to;
Fig. 2 is the plane that portion is transported in image forming part in the image processing system of Fig. 1 and subscan;
Fig. 3 is the amplification key diagram that portion is transported in subscan;
Fig. 4 is the formation and the charged key diagram of moving belt;
Fig. 5 is the sheet feed section key diagram;
Fig. 6 indication device control part summary description figure;
Fig. 7 represents the charged control key diagram of moving belt;
Heater control key diagram when Fig. 8 represents to print;
Fig. 9 represents the charged key diagram according to detected humidity control moving belt.
The specific embodiment
Below, present invention will be described in detail with reference to the accompanying embodiment, in following examples, though to inscape, kind, combination, shape, configuration waits and has done various qualifications relatively,, these only exemplify, and the present invention is not limited thereto.
With reference to image processing system one example that Fig. 1-Fig. 3 explanation the present invention relates to.Fig. 1 represents the summary pie graph of the image processing system that the embodiment of the invention relates to, and Fig. 2 is the plane that portion is transported in image forming part in the image processing system of Fig. 1 and subscan, and Fig. 3 is the amplification key diagram that portion is transported in subscan.
This image processing system is provided with the image forming part 2 and the subscan that are used to form image and transports portion 3 etc. in the inside of device body 1 (in the framework).Be provided with as taking in the sheet feed section 4 of means in the bottom of device body 1, separate as the printing medium that is transported parts from these sheet feed section 4 many ground, carry out paper supply, on one side by subscan transport portion 3 with the position of image forming part 2 subtends, transport paper 5 discontinuously, by image forming part 2 drop be discharged to paper 5 on formation (record) desired image on one side, after this, transport portion 6 by row's paper, paper 5 is discharged on the top row's paper platform 7 that is formed on device body 1.
This image processing system above row's paper platform 7, is provided with the image reading unit (scanner section) 11 that is used for reading images, as the input system of the view data (printed data) that forms at image forming part 2 on the top of device body 1.In this image reading unit 11, scanning optical is 15 to comprise lighting source 13 and reflective mirror 14, and scanning optical is 18 to comprise reflective mirror 16,17, described scanning optical is 15 and 18 to move, read the original image that is positioned on the contact glass 12, at lens 19 rear configuration image read elements 20, the described original image that is scanned is read in by described image read element 20, as picture signal, this picture signal is digitized, and imposes image and handles, and can print the printed data of handling through image.On contact glass 12, be provided for pushing the pressing plate 10 of original copy.
Image processing system can also receive information processor from the personal computer of outside etc. by cable or optical cable or network, the image read-out of image analyzer etc., the printed data that comprises view data of the host computer side of camera heads such as digital camera etc. etc., input system as the view data (printed data) that forms at image forming part 2, image processing system is handled received printed data, prints.
As shown in Figure 2, in the image forming part 2 of image processing system, vehicle frame guide 21 and guide pillar (not diagram) are keeping vehicle frame 23, it can be moved along main scanning direction, be with 29 to be erected between driving pulley 28a and the driven pulley 28b synchronously, drive described driving pulley 28a by main scan motor 27, can make vehicle frame 23 move along main scanning direction.
On this vehicle frame 23, carry and discharge the record head 24 that head constitutes by drop, discharge drop of all kinds, make vehicle frame 23 move along main scanning direction, transporting portion 3 by subscan transports paper 5 along paper carriage direction (sub scanning direction) on one side, discharge drop from record head 24 on one side, form image, promptly so-called shuttle type mode.
In the present embodiment, record head 24 comprises a drop discharge 24k1,24k2,24c, 24m, 24y amounts to five drops and discharges head (following brief note is " head "), wherein, 24k1 and 24k2 discharge black (K) China ink, 24c discharges cyan (C) China ink, and 24m discharges magenta (M) China ink, and 24y discharges yellow (Y) China ink.Each assistant print cartridges 25 is arranged on the vehicle frame 23, supplies with China ink of all kinds respectively from this assistant print cartridges 25.
On the other hand, as shown in Figure 1, print cartridge of all kinds (ink cartridge) 26 is taken in black (K) China ink respectively as record liquid cartridge, cyan (C) China ink, magenta (M) China ink, yellow (Y) China ink, from the front of device body 1 relative cartridge installation portion 26A loading and unloading freely, from print cartridge 26 of all kinds to assistant print cartridges 25 ink supply of all kinds.In the present embodiment, for black ink, supply with to two assistant print cartridges 25 from a print cartridge 26.
As record head 24, can use piezo-electric type or pattern of fever or electrostatic etc.So-called piezo-electric type is meant that using piezoelectric element is start means (actuator) as pressure generation means, to the China ink pressurization of (pressure generating chamber) in the black stream, and the feasible oscillating plate distortion that forms black stream wall, black stream internal volume changes, and discharges ink droplet.So-called pattern of fever is meant the use heating resistor, and the China ink in the heated ink stream makes its gassing, causes pressure, discharges ink droplet.So-called electrostatic is meant forming the oscillating plate of black stream wall and electrode pair to configuration, produces electrostatic force between oscillating plate and electrode, makes the oscillating plate distortion, and black stream internal volume changes, and discharges ink droplet.
In the non-lettering zone of the scanning direction of vehicle frame 23 side, return mechanism 121 is kept in configuration, and it comprises head cleaning apparatus, is used to keep or reply the state of the nozzle of record head 24.This is kept return mechanism 121 and is provided with five Hydra lid 122y, 122m, and 122c, 122k1,122k2, an attraction is with covering 123, wiper blade 124, emptying receiver member 125 etc.Described Hydra lid 122y, 122m, 122c, 122k1,122k2 are respectively applied for each nozzle face that covers or cover record head 24, and described wiper blade 124 is used for the nozzle face of wiping record head 24, and described emptying receiver member 125 is used to carry out emptying.
Subscan is transported portion 3 and is provided with ring-type moving belt 31, charging roller 34, and guiding parts 35, backer roll 36, disengaging pawl 37 transports roller 38.Described ring-type moving belt 31 is erected at as the transporting between roller 32 and the driven voller 33 as jockey pulley of driven roller, makes the carriage direction of about 90 degree of paper 5 conversion of supplying with from the below, makes itself and image forming part 2 subtends; Described charging roller 34 is as charging facility, is used to make these moving belt 31 surface chargings, applies the high voltage of alternating voltage from high voltage source; Described guiding parts 35 with the subtend zone of image forming part 2, moving belt 31 is led; Described backer roll 36 pushing paper 5, with the subtend zone of image forming part 2, make paper 5 and moving belt 31 crimping; Described disengaging pawl 37 is used for making that the paper 5 that is formed with image separates with moving belt 31; The described roller 38 that transports is used for paper 5 row's of being sent to paper are transported portion 6.
From subscan motor 131 by be with synchronously 132 and synchronous roller 133 make and transport the rollers revolution, make subscan transport of paper carriage direction (sub scanning direction) revolution of the moving belt 31 of portion 3 towards Fig. 2.
As shown in Figure 4, moving belt 31 is a double-layer structure, comprises top layer 31a and backing layer 31b (middle resistive layer, ground plane).Described top layer 31a by the pure resinous wood that does not for example carry out resistance control for example the pure material of ETFE forms, become the paper adsorption plane, described backing layer 31b and the identical material of described top layer 31a, use carbon carry out resistance and control.
Between driven voller 33 and charging roller 34, cleaning means 135 is set and the brush 136 that disappears, described cleaning means 135 is used to remove attached to the paper powder on moving belt 31 surfaces etc., in the present embodiment, uses polyester film as cleaning means 135.The described brush 136 that disappears is used to remove the electric charge on moving belt 31 surfaces.
Sheet feed section 4 comprises paper feeding cassette 41, paper feed roller 42, and friction pad 43, paper supply transport roller 44.Described paper feeding cassette 41 is taken in plurality of sheets of paper as taking in the means mounting, and described paper feed roller 42 and friction pad 43 many ground separate the paper of sending in the paper feeding cassette 41 5, and described paper supply transports roller 44 paper 5 fortune are transported portion 3 to subscan.Paper supply motor 45 is made of for example HB type stepper motor as drive source, 45 revolutions of paper supply motor, and by paper heating clutch (not diagram) transmission paper feed roller 42, described paper supply transports roller 44 and is also driven by described paper supply motor 45.
In sheet feed section 4, as shown in Figure 5, humidity sensor 141 is installed on the metal plate component 1A of device body 1 as the Humidity Detection means, is configured in the top of paper feeding cassette 41, is used for detecting the humidity of the paper 5 that is accommodated in paper feeding cassette 41.
In addition, be configured in the top of paper feeding cassette 41, be accommodated in paper 5 in the paper feeding cassette 41, make its drying by heating as the heater 142 of heater means.Promptly by heater 142 being configured in the top of paper feeding cassette 41, can be most effectively to uppermost paper 5 heating, and heater configuration is compared in occasions such as paper feeding cassette 41 bottoms, can heat paper effectively.
Row's paper transports portion 6 and is provided with and is used to transport the two couples row paper that forms image and transports roller 61,62, and is used for two couple with paper 5 row of being sent to paper platforms 7 and arranges paper and transport roller 63,64.
Below, with reference to the summary of the control part of this image processing system of Fig. 6 block diagram illustrating.
Control part 300 comprises the CPU301 that is used for control device integral body, is used to store the program of CPU301 implementation and the ROM302 of other fixed datas, the RAM303 of temporary transient storing image data etc., nonvolatile memory (NVRAM) 304, ASIC305.Described nonvolatile memory 304 is used for also keeping data during the device power supply is cut off, and described ASIC305 handles and is used to control the input/output signal that various signals are handled, image is handled, device is whole.
Control part 300 also comprise be used to receive or transmission and host computer side between data or the I/F307 of signal, be used to drive a drive control part 308 and the head driver 309 of control record head 24, be used to drive the main scan motor drive division 311 of main scan motor 27, be used to drive the subscan motor driving part 312 of subscan motor 131, be used to drive the paper supply motor driving part 313 of paper supply motor 141, AC bias voltage supply unit 316, and the Motor of other black feed systems, be used to drive clutch sectors of breakdown such as paper heating clutch (not diagram).316 pairs of charging rollers 34 of described AC bias voltage supply unit apply the alternating voltage (in the present embodiment, being square wave) of high pressure, are used to make that moving belt 31 is charged.
In control part 300, also comprise and print beginning sensor 201, print and finish sensor 202, I/O317.As shown in Figure 3, described printing begins sensor 201 and detects by transporting the paper 5 of roller 32 and pushing roller 36 at the upstream side of record head 24, and described printing finishes sensor 202 and transporting the downstream test paper 5 of roller 38.Described I/O 317 is used to import detection signal from various sensors etc., described various sensor comprises the original position sensor of for example keeping return mechanism 121, be used for the sensor that the checkout gear lid is opened, be used for detecting the humidity sensor 141 of paper 5 humidity that are accommodated in paper feeding cassette 41 etc.
And control part 300 is connected with guidance panel 318, is used to import information necessary concerning device, and can shows.
Control part 300 can receive information processor from for example personal computer of outside etc. at I/F 307 by cable or optical cable or network, the image read-out of image analyzer etc., the printed data of the host computer side of camera heads such as digital camera etc. etc.CPU301 reads the printed data in the trusted buffer that is included among the I/F 307, resolves, and carries out necessary image processing at ASIC305, and the conversion process of data etc. are to a drive control part 308 relays image data.
If a drive control part 308 receives the suitable view data (dot pattern of delegation's part with record head 24, dot pattern), synchronous with time signal, the view data of this delegation's part is sent to head driver 309 with serial data, be sent to head driver 309 with latching (latch) signal fix time.This drive control part 308 comprises the ROM of the graph data that is used for storing driver waveform (driving signal), and the drive waveforms generation circuit that is made of waveform generating circuit and amplifier etc.Described ROM also can be made of ROM302, and described waveform generating circuit comprises the D/A converter, and the drive waveforms data of reading from ROM are carried out the D/A conversion.
Head driver 309 comprises shift register, latch cicuit, level-conversion circuit (level shifter), analog switch array (switch means) etc.The input of described shift register is from the time signal of a drive control part 308 and as the serial data of view data, described latch cicuit is according to the register value that latchs described shift register from the latch signal of a drive control part 308, described level-conversion circuit makes the output valve level of described latch cicuit change, and described analog switch array is controlled this level shifter on/off.By described analog switch array control on/off, the needed drive waveforms that is included in the drive waveforms selectively is applied on the start means of record head 24 the activation record head.
Control part 300 control AC bias voltage supply units 316 when moving belt 31 absorption paper 5 transport, make alternating voltage be applied on the charging roller 34, and described alternating voltage has the magnitude of voltage of the required absorption affinity of generation of charging.
Control part 300 is according to humidity sensor 141 detected humidity, but the on-off switch 144 by driver 143 and peripheral operation, and control is configured in heater 142 on/off of paper feeding cassette 41 tops.On-off switch 144 is installed in the circuit that heater 142 is powered, and can make heater 142 be in off-state forcibly by peripheral operation.
In the image processing system that constitutes like this, as shown in Figure 7, transport roller 32 and drive moving belt 31, be arranged on this slit plectane 334 that transports roller 32 ends and optical sensor 335 formation encoders 336, detect the revolution amount by this encoder 336,, drive control subscan motor 131 by control part 300 and motor driving part 312 according to detected revolution amount, simultaneously, apply high voltage from AC bias voltage supply unit 316 to charging roller 34 as the positive and negative square wave of alternating voltage.
Like this, insulating barrier (top layer) 31a with moving belt 31 joins owing to charging roller 34, therefore, carriage direction along moving belt 31, the top layer 31a of moving belt 31 is applied the electric charge of positive and negative alternately bandedly, on moving belt 21 with fixed charged width charged, generate non-uniform electric field.Positive and negative charged width is called " the charged cycle is long ".
So, supply with paper 5 from sheet feed section 4, send into and transport between roller 32 and the pushing roller 36, form positive and negative charge at top layer 31a, non-uniform electric field takes place on moving belt 31, if paper 5 is delivered on the moving belt 31, then paper 5 along with electric field towards instantaneous split pole, because of Electrostatic Absorption power is adsorbed onto on the moving belt 31, along with the mobile of moving belt 31 is transported.
And, with moving belt 31 discontinuously transport paper 5 on one side, discharge the drop of record liquid on one side from record head 24, record (printing) image, the front of the paper 5 that has printed at disengaging pawl 37 is separated with moving belt 31, transports portion 6 by transporting roller 38 row's of being sent to paper.
The on of the heater 142 when this image processing system printing being described below with reference to Fig. 8.
If begin printing, in step S101, receive printed data.
In step S102,, judge whether the humidity that is accommodated in the paper 5 in the paper feeding cassette 41 reaches institute more than the definite value according to the detection signal of humidity sensor 141, at this moment, if do not reach institute's definite value above ("No" of step S102), then enter step S106, under this state, carry out the paper supply action.If the humidity of paper 5 reaches institute's definite value above ("Yes" of step S102), then enter step S103.
In step S103, calculate the drop discharge rate according to printed data.
In step S104, judge that the drop discharge rate be printed on the printed data on the paper 5 or printing rate are whether in institute quantitatively more than (institute's definite value).This drop discharge rate can be calculated according to printed data and discharge the drop total amount, perhaps a piece of paper 5 be calculated the ratio (printing rate) that forms image-region and obtain.
If the drop discharge rate of printed data or printing rate do not reach institute quantitatively more than (institute's definite value) ("No" of step S104), then enter step S105, make heater 142 be in on-state in fixing time, heating is accommodated in the paper 5 in the paper feeding cassette 41, after making its drying, enter step S106, carry out the paper supply action.This occasion, make heater 142 be in on-state the institute fix time (being also referred to as heat time heating time or dehumidifying time) can set according to humidity.For example, humidity is 60%RH, is set at 1 minute, and humidity is 70%RH, is set at 2 minutes, and humidity is 80%RH, is set at 3 minutes.Be preferably, shorten the turn-on time of heater as far as possible, save electric power.
Make heater 142 fix time be in on-state after, both can be once more detect humidity by humidity sensor 141, also can not detect once more and move on to the paper supply action, to shorten stand-by time.Have, can detect humidity by humidity sensor 141 once more in a printing or first occasion of printing continuously yet, second and second of printing is not detected later on once more continuously.
If the drop discharge rate of printed data or printing rate reach institute's quantitative (institute's definite value) when above ("Yes" of step S104), then enter step S106, even detecting humidity is that institute does not make more than the definite value that heater 142 is in on-state yet, promptly, do not heat the paper 5 that is accommodated in the paper feeding cassette 41 and make its drying, move down into the paper supply action at this state.
That is, when paper 5 humidity height (institute is more than the definite value), heating paper 5 makes its drying, bendings in the time of suppressing to transport etc. still, are attached to occasion on the dry paper 5 when making the volume drop discharge, for example, print solid image occasion,, easily take place wrinkling because humidity takes place sharply to change on the paper 5, because this is wrinkling, friction etc. can take place with record head 24 in paper 5 when transporting, and causes picture quality low, or stops up.
So as mentioned above, the drop amount of injecting paper 5 surpasses institute quantitatively time the (also comprise the printing rate and surpass institute quantitatively the time), even the humidity of paper 5 is institute more than the definite value, also do not carry out the heating of heater 142, can suppress bending, prevent deterioration in image quality, transporting property of raising.
Therefore, when most printing for example solid image etc. use the image occasion of volume record liquid, can make on-off switch 144 be in off-state from the peripheral operation on-off switch 144 of device body 1, make heater 142 be in off-state forcibly.
Below with reference to the charged control of Fig. 9 explanation to moving belt 31.
In step S201,, detect the humidity that is accommodated in the paper 5 in the paper feeding cassette 41 by humidity sensor 141.
In step S202, detection signal according to humidity sensor 141, judge whether the humidity that is accommodated in the paper 5 in the paper feeding cassette 41 reaches institute more than the definite value, at this moment, if do not reach institute's definite value above ("No" of step S202), then enter step S205, under this state, carry out with the corresponding charged control of the humidity that detects to moving belt 31.
If the detection humidity of paper 5 reaches institute's definite value above ("Yes" of step S202), then enter step S203, make heater 142 be in on-state in fixing time, heating is accommodated in the paper 5 in the paper feeding cassette 41, makes its drying.
In step S204, judge once more whether the humidity that is detected of paper 5 reaches institute more than the definite value, if do not reach institute's definite value above ("No" of step S204), then enter step S205, carry out with the corresponding charged control of the humidity that detects to moving belt 31.
If reach institute's definite value above ("Yes" of step S204), then return step S203, heating is accommodated in the paper 5 in the paper feeding cassette 41, makes its drying.
Charged control described here is to carry out the control that makes that the charged cycle long (charged width) changes.That is, as mentioned above, when moving belt is applied alternating electric field and applies electric charge, the absorption affinity of paper not only because of applying voltage swing, and is changed because of charged cycle long (or charged width) and the resistance value of paper.And there are dependency relation in the resistance value and the humidity of paper.So, by test paper humidity, with the long charged control of carrying out moving belt 31 of the charged cycle that can obtain required absorption affinity.
Above with reference to description of drawings embodiments of the invention, but the present invention is not limited to the foregoing description.Can do all changes in the technology of the present invention thought range, they all belong to protection scope of the present invention.
Claims (11)
1. an image processing system is discharged drop from record head, forms image on printing medium, it is characterized in that, comprising:
Take in means, take in described printing medium;
Heater means, heating is accommodated in this and takes in described printing medium in the means;
Control device, according to the testing result that is accommodated in this humidity of taking in the described printing medium in the means and with the relevant information of drop discharge rate that is used on this printing medium forming image, control described control device.
2. according to the image processing system described in the claim 1, it is characterized in that, when the drop discharge rate that is used for formation image on this printing medium is quantitative above institute, no matter the testing result of described Humidity Detection means is not carried out the heating of described heater means to described printing medium.
3. according to the image processing system described in claim 1 or 2, it is characterized in that, moving belt is applied electric charge, produce electrostatic force, the absorption printing medium transports.
4. according to the image processing system described in the claim 3, it is characterized in that, when the discontented institute of the detected humidity of described Humidity Detection means definite value, according to above-mentioned detection humidity, control applies electric charge to described moving belt, when the detected humidity of described Humidity Detection means reaches institute's definite value or institute's definite value when above, described printing medium is heated by above-mentioned heater means.
5. according to any described image processing system among the claim 1-4, it is characterized in that described heater means is configured in the top that is accommodated in the described printing medium in the means of taking in.
6. according to any described image processing system among the claim 1-5, it is characterized in that, be provided with the switch means that externally to operate, be used for the power supply of switch to described heater means.
7. according to any described image processing system among the claim 1-6, it is characterized in that, be provided with the manuscript reading section that is used to read original copy.
8. an image forming method is discharged drop from record head, forms image on printing medium, it is characterized in that, may further comprise the steps:
Take in described printing medium;
Detect the humidity of the printing medium of being taken in;
Calculate the drop discharge rate according to printed data;
According to the testing result of described printing medium humidity and the relevant information that is used on this printing medium, forming the drop discharge rate of image, control heater means.
9. the image forming method described in according to Claim 8, it is characterized in that, when the drop discharge rate that is used for formation image on this printing medium is quantitative above institute, no matter described Humidity Detection result does not carry out the heating of described heater means to described printing medium.
10. according to Claim 8 or the image forming method described in 9, it is characterized in that, moving belt is applied electric charge, produce electrostatic force, the absorption printing medium transports.
11. according to the image forming method described in the claim 10, it is characterized in that, when the discontented institute of detected humidity definite value, according to above-mentioned detection humidity, control applies electric charge to described moving belt, when detected humidity reaches institute's definite value or institute's definite value when above, described printing medium is heated by above-mentioned heater means.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005184745A JP4671781B2 (en) | 2005-06-24 | 2005-06-24 | Image forming apparatus |
| JP184745/05 | 2005-06-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1883956A true CN1883956A (en) | 2006-12-27 |
| CN1883956B CN1883956B (en) | 2012-03-14 |
Family
ID=37582303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610092592XA Expired - Fee Related CN1883956B (en) | 2005-06-24 | 2006-06-16 | Image forming device and method |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4671781B2 (en) |
| CN (1) | CN1883956B (en) |
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| CN101905577A (en) * | 2009-06-05 | 2010-12-08 | 佳能株式会社 | Inkjet recording apparatus |
| CN102205698A (en) * | 2010-02-17 | 2011-10-05 | 株式会社东芝 | Image forming apparatus and drying method used in image forming apparatus |
| CN102809917A (en) * | 2011-05-30 | 2012-12-05 | 日本派欧尼株式会社 | Heater unit |
| CN103685843A (en) * | 2013-11-29 | 2014-03-26 | 杨伟 | Copying equipment with paper damp proofing function |
| CN103660619A (en) * | 2013-12-02 | 2014-03-26 | 杨伟 | Printing equipment with paper damp proofing function |
| CN104803218A (en) * | 2014-01-23 | 2015-07-29 | 京瓷办公信息系统株式会社 | Sheet feeder and image forming apparatus |
| CN105564049A (en) * | 2014-10-31 | 2016-05-11 | 精工爱普生株式会社 | Recording device and curl determination method |
| CN107608186A (en) * | 2017-10-23 | 2018-01-19 | 贵州云侠科技有限公司 | Color laser printer with paper jamming prevention function |
| CN109311336A (en) * | 2016-06-30 | 2019-02-05 | 惠普发展公司，有限责任合伙企业 | Utilize the printing of moisture distribution |
| CN110978804A (en) * | 2019-12-23 | 2020-04-10 | 容大合众(厦门)科技集团股份公司 | Printer for high-humidity environment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4424367B2 (en) | 2007-03-30 | 2010-03-03 | ブラザー工業株式会社 | Image recording device |
| JP5936309B2 (en) * | 2011-03-10 | 2016-06-22 | 桂川電機株式会社 | Paper feeder |
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| JP3224528B2 (en) * | 1990-08-31 | 2001-10-29 | キヤノン株式会社 | Ink jet recording device |
| JPH06198868A (en) * | 1993-01-08 | 1994-07-19 | Canon Inc | Ink jet recorder |
| JPH0858081A (en) * | 1994-08-24 | 1996-03-05 | Canon Inc | Ink jet printing device |
| JP3095054B2 (en) * | 1996-03-25 | 2000-10-03 | セイコーエプソン株式会社 | Inkjet cutting plotter |
| JPH11255361A (en) * | 1998-03-11 | 1999-09-21 | Canon Inc | Sheet accommodation device and image forming device |
| JP3748010B2 (en) * | 1999-05-21 | 2006-02-22 | セイコーエプソン株式会社 | Inkjet recording device |
| JP4483149B2 (en) * | 2001-08-29 | 2010-06-16 | ブラザー工業株式会社 | Inkjet recording device |
| JP2004042436A (en) * | 2002-07-11 | 2004-02-12 | Canon Inc | Image formation apparatus and image read and record apparatus |
| CN1287237C (en) * | 2002-09-24 | 2006-11-29 | 株式会社理光 | Washing device, colour process box, imaging apparatus and toner |
| JP3776394B2 (en) * | 2002-10-10 | 2006-05-17 | 株式会社リコー | Paper conveying apparatus and image recording apparatus |
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2005
- 2005-06-24 JP JP2005184745A patent/JP4671781B2/en not_active Expired - Fee Related
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2006
- 2006-06-16 CN CN200610092592XA patent/CN1883956B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101905577A (en) * | 2009-06-05 | 2010-12-08 | 佳能株式会社 | Inkjet recording apparatus |
| CN101905577B (en) * | 2009-06-05 | 2013-12-04 | 佳能株式会社 | Inkjet recording apparatus |
| CN102205698A (en) * | 2010-02-17 | 2011-10-05 | 株式会社东芝 | Image forming apparatus and drying method used in image forming apparatus |
| CN102809917A (en) * | 2011-05-30 | 2012-12-05 | 日本派欧尼株式会社 | Heater unit |
| CN103685843A (en) * | 2013-11-29 | 2014-03-26 | 杨伟 | Copying equipment with paper damp proofing function |
| CN103660619A (en) * | 2013-12-02 | 2014-03-26 | 杨伟 | Printing equipment with paper damp proofing function |
| CN104803218A (en) * | 2014-01-23 | 2015-07-29 | 京瓷办公信息系统株式会社 | Sheet feeder and image forming apparatus |
| CN104803218B (en) * | 2014-01-23 | 2017-04-12 | 京瓷办公信息系统株式会社 | Sheet feeder and image forming apparatus |
| CN105564049A (en) * | 2014-10-31 | 2016-05-11 | 精工爱普生株式会社 | Recording device and curl determination method |
| CN105564049B (en) * | 2014-10-31 | 2019-04-23 | 精工爱普生株式会社 | Recording device and curling determination method |
| CN109311336A (en) * | 2016-06-30 | 2019-02-05 | 惠普发展公司，有限责任合伙企业 | Utilize the printing of moisture distribution |
| US10737509B2 (en) | 2016-06-30 | 2020-08-11 | Hewlett-Packard Development Company, L.P. | Printing with moisture profiles |
| CN107608186A (en) * | 2017-10-23 | 2018-01-19 | 贵州云侠科技有限公司 | Color laser printer with paper jamming prevention function |
| CN110978804A (en) * | 2019-12-23 | 2020-04-10 | 容大合众(厦门)科技集团股份公司 | Printer for high-humidity environment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4671781B2 (en) | 2011-04-20 |
| JP2007001171A (en) | 2007-01-11 |
| CN1883956B (en) | 2012-03-14 |
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